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Hybrid Phonons in Nanostructures$
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Brian K. Ridley

Print publication date: 2017

Print ISBN-13: 9780198788362

Published to Oxford Scholarship Online: April 2017

DOI: 10.1093/acprof:oso/9780198788362.001.0001

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PRINTED FROM OXFORD SCHOLARSHIP ONLINE (oxford.universitypressscholarship.com). (c) Copyright Oxford University Press, 2021. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in OSO for personal use. date: 20 January 2022

The Interaction between Electrons and Polar Optical Phonons in Nanostructures: General Remarks

The Interaction between Electrons and Polar Optical Phonons in Nanostructures: General Remarks

Chapter:
(p.119) 11 The Interaction between Electrons and Polar Optical Phonons in Nanostructures: General Remarks
Source:
Hybrid Phonons in Nanostructures
Author(s):

B. K. Ridley

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780198788362.003.0013

In the study of transport phenomena in semiconductor nanostructures the interaction between electrons and phonons assumes a central significance because of its intrinsic nature. In principle, scattering due to impurities, lattice defects, and interface roughness can be eliminated. In practice, technical innovation regarding purification and crystal growth can make non-phonon scattering subordinate in many structures at room temperature, and likely to be dominant only at low temperatures, where the excitation of lattice vibrations is weak, Even there, the electron-phonon interaction cannot be ignored when the electrons become hot in high electric fields. The only other scattering mechanism that is not readily amenable to ideal crystal growth is that due to alloy fluctuations. Otherwise, in unalloyed binary semiconductors, the electron-phonon interaction is of central importance. This chapter includes: a brief history; discussion on the role of lattice dispersion for optical modes; and coupled modes and hot phonons.

Keywords:   semiconductors, nanostructures, electrons, phonons, optical modes

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